{"product_id":"solid-state-relay-10a-120a-dc-ac-ac-dc-dc-single-phase-ssr-24-480vac","title":"Solid State Relay 10A–120A DC-AC AC-AC DC-DC SSR | 24-480VAC","description":"\u003ch2\u003eCKCTINNER Solid State Relay – Reliable Non-Contact Switching\u003c\/h2\u003e\n\u003cp\u003eUpgrade your electrical control systems with the \u003cstrong\u003eCKCTINNER Solid State Relay (SSR)\u003c\/strong\u003e — a high-performance, non-contact switching solution available in a wide range of current ratings from \u003cstrong\u003e10A to 120A\u003c\/strong\u003e. Whether you need DC-AC, AC-AC, or DC-DC switching, this single-phase SSR delivers fast, silent, and spark-free operation for industrial, commercial, and DIY applications.\u003c\/p\u003e\n\n\u003cp\u003eUnlike traditional mechanical relays, solid state relays use semiconductor components to switch loads with zero moving parts — resulting in longer service life, reduced electromagnetic interference, and quieter operation. Rated for output voltages of \u003cstrong\u003e24–480VAC\u003c\/strong\u003e, this SSR is compatible with a broad range of systems and equipment.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple current ratings:\u003c\/strong\u003e 10A, 25A, 40A, 60A, 80A, 100A, and 120A — choose the right size for your application\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile switching modes:\u003c\/strong\u003e DC-AC, AC-AC, and DC-DC configurations available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide output voltage range:\u003c\/strong\u003e 24–480VAC for broad compatibility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNon-contact operation:\u003c\/strong\u003e No mechanical contacts means no arcing, no sparking, and drastically reduced wear\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSealed protective enclosure:\u003c\/strong\u003e Guards internal components against dust and moisture ingress\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSPDT contact arrangement:\u003c\/strong\u003e Standard single-pole double-throw design for flexible wiring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGeneral purpose use:\u003c\/strong\u003e Ideal for heating systems, motor control, lighting, industrial automation, and more\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo hazardous chemicals:\u003c\/strong\u003e RoHS-compliant, contains no high-concern substances\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e CKCTINNER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SSR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Arrangement:\u003c\/strong\u003e SPDT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Ratings:\u003c\/strong\u003e 10A \/ 25A \/ 40A \/ 60A \/ 80A \/ 100A \/ 120A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e 24–480VAC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSwitching Type:\u003c\/strong\u003e DC-AC \/ AC-AC \/ DC-DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e Single Phase\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Sealed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e General Purpose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cp\u003eThis SSR is well-suited for a wide variety of projects and installations, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial heating and temperature control systems\u003c\/li\u003e\n  \u003cli\u003eCNC machine and motor control panels\u003c\/li\u003e\n  \u003cli\u003eLighting control and dimming circuits\u003c\/li\u003e\n  \u003cli\u003ePLC and automation control boards\u003c\/li\u003e\n  \u003cli\u003e3D printer heated beds and extruder control\u003c\/li\u003e\n  \u003cli\u003eDIY electronics and maker projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/360-bicycle-chain-cleaner-tool-gear-cleaning-kit\"\u003e360° Bicycle Chain Cleaner Tool | Bike Gear Cleaning Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is a solid state relay and how does it differ from a mechanical relay?\u003c\/h4\u003e\n\u003cp\u003eA: A solid state relay (SSR) switches electrical loads using semiconductor devices (such as thyristors or MOSFETs) rather than physical moving contacts. This means no arcing, no sparking, silent operation, faster switching speeds, and a much longer operational lifespan compared to traditional mechanical relays.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Which current rating should I choose for my application?\u003c\/h4\u003e\n\u003cp\u003eA: Select a current rating that is at least 1.5–2× the maximum load current of your application. For example, if your load draws 20A, choose the 40A SSR. This safety margin helps prevent overheating and extends the life of the relay. Current options available: 10A, 25A, 40A, 60A, 80A, 100A, and 120A.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this solid state relay require a heat sink?\u003c\/h4\u003e\n\u003cp\u003eA: For higher current ratings (typically 40A and above), mounting the SSR on an adequately sized aluminum heat sink is strongly recommended. SSRs generate heat during operation, and proper thermal management ensures reliable, long-term performance.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this SSR compatible with DC control signals (e.g., from a microcontroller or PLC)?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. Depending on the variant selected (DC-AC, AC-AC, or DC-DC), this SSR can be triggered by low-voltage DC control signals, making it ideal for use with PLCs, Arduino, Raspberry Pi, and other microcontroller platforms.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a solid state relay and how does it differ from a mechanical relay?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A solid state relay (SSR) switches electrical loads using semiconductor devices (such as thyristors or MOSFETs) rather than physical moving contacts. 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